Drill bit holder



FIG. 1 is a right side view.

FIG. 2 is a left side view.

FIG. 3 is a front elevation view, the rear elevation view being a mirror image thereof.

FIG. 4 is a top plan view; and,

FIG. 5 is a bottom plan view.

The broken lines illustrate the environment of the drill bit holder and form no part of the claimed design. 

I claim the ornamental design for a drill bit holder, as shown and described. 